I re-sized my Windows partition on my macbook yesterday using Camptune, successfully. It was fine yesterday, but today however, the macbook won't boot into Mac OS. I get the grey Apple screen and spinning disc, but nothing more, then eventually it goes to blue-screen. I have reset PRAM, with no change. It does boot into Windows fine however. This is clearly connected to using Camptune to reconfigure partitions. Can you suggest what I can do next. Should I run the Mac install repair disks, and if so should I be careful about anything in particular. Many thanks.